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Tithi
Subject: Maths
, asked on 5/2/18
Solve this:
Q. Arjun Singh hits 13 out of 20 times, Rajesh Sharma hits 14 out of 20 times and Kumaran hits 17 times out of 20 times. Find the probability that the target of hit. If there were 8000 enemy planes, how many of them would be hit by the soldiers. What do you say about their contribution to the country ?
Answer
1
Arnatri Goswami
Subject: Maths
, asked on 5/2/18
Please solve qtn 14 a with explanation..dont give any links plz..
Question 14. (a) A letter is known to have come either from TATANAGAR or CALCUTTA. On the envelope, just two consecutive letter TA are visible. What is the probability that the letter has come from (i) Calcutta ? (ii) Tatanagar ?
(b) A coin is tossed 5 times. What is the probability of getting at least 3 heads ?
Answer
2
Shanaya
Subject: Maths
, asked on 5/2/18
In probability distribution table, is it true:
The cases of events without replacement?
The probability of success remains same in each ?
Answer
1
Apurva Inamdar
Subject: Maths
, asked on 4/2/18
In a college, 50% students read kannada newspaper, 30% read english while 18% read both. One student is selected from the college. Find the probability that he reads neither kannada nor english newspaper.
Answer
1
Shubhrajyoti Ghosh
Subject: Maths
, asked on 3/2/18
From a lot of 25 articles containing 5 defectives a sample of 4 articles was drawn at random (a) without
replacement (b) with replacement. Find the probability distribution of X, the number of defectives.
Answer
1
Riya Verma
Subject: Maths
, asked on 1/2/18
Can we solve this by taking the (A U B U C)? If not specify the reason.
Answer
6
B Ashwini
Subject: Maths
, asked on 23/1/18
From a lot of 30 bulbs, which includes 6 defective bulbs, a sample of 3 bulbs is drawn at random with replacement. Find the probability distribution of the number of defective bulbs.
Answer
1
Snegaa J. S.
Subject: Maths
, asked on 23/1/18
if A and B are two events such that p(A) = 1/4 , P(B)=1/2 AND P(not A or not B ) = 3/4 THEN FIND P(NOTA AND NOT B)
Answer
3
Arnapurna Paikaray
Subject: Maths
, asked on 21/1/18
Q 70 without using combination
70.
Three bags contain balls as shown in the table.
A bag is chosen at random and two balls are drawn from it. They happen to be white and red. What is the probability that they come from bag III ?
Delhi 2009
Answer
1
Chaitanya Kapoor
Subject: Maths
, asked on 16/1/18
Q. The random variable X can take only the values 0, l, 2 and 3. Given that
P(X=0) =P(X=1)= p
and
P(X=2)=P(X=3)
such that
∑
p
i
x
i
2
=
2
∑
p
i
x
i
, find the value of p.
Answer
1
Chaitanya Kapoor
Subject: Maths
, asked on 16/1/18
Solve
Q). Prove that if E and F are independent events, then the events E and F' are also independent.
Answer
1
Dipesh Malhotra
Subject: Maths
, asked on 15/1/18
Can two mutually exclusive events be independent ?
Answer
2
Dipesh Malhotra
Subject: Maths
, asked on 15/1/18
Q
.
H
o
w
P
A
'
∩
B
'
P
B
'
=
P
A
∪
B
'
P
B
'
?
Answer
2
Laieeqa
Subject: Maths
, asked on 15/1/18
Q.18) A card is drawn from a well shuffled pack of 52 cards. The outcome is noted and the pack is again reshuffled without replacing the card. Another card is then drawn. What is the probability that the first card is spade and the second is black king.
Answer
1
Laieeqa
Subject: Maths
, asked on 15/1/18
solve
Q14. In a hospital, there are 4 dialysis machines, the chance of any one of them being defective during a day is 1/ 6. Find the probability that at least two machines will be in working order of 4 so that at least two patients may use the dialysis machine. Is hospital in sound condition ? if not why ?
Answer
1
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What are you looking for?
Q. Arjun Singh hits 13 out of 20 times, Rajesh Sharma hits 14 out of 20 times and Kumaran hits 17 times out of 20 times. Find the probability that the target of hit. If there were 8000 enemy planes, how many of them would be hit by the soldiers. What do you say about their contribution to the country ?
Question 14. (a) A letter is known to have come either from TATANAGAR or CALCUTTA. On the envelope, just two consecutive letter TA are visible. What is the probability that the letter has come from (i) Calcutta ? (ii) Tatanagar ?
(b) A coin is tossed 5 times. What is the probability of getting at least 3 heads ?
The cases of events without replacement?
The probability of success remains same in each ?
replacement (b) with replacement. Find the probability distribution of X, the number of defectives.
70. Three bags contain balls as shown in the table.
Q. The random variable X can take only the values 0, l, 2 and 3. Given that
P(X=0) =P(X=1)= p and P(X=2)=P(X=3) such that , find the value of p.
Q). Prove that if E and F are independent events, then the events E and F' are also independent.
Q14. In a hospital, there are 4 dialysis machines, the chance of any one of them being defective during a day is 1/ 6. Find the probability that at least two machines will be in working order of 4 so that at least two patients may use the dialysis machine. Is hospital in sound condition ? if not why ?